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Original Press Release

Washington Mills: How Pure is Your Mullite?

Press release date: May 6, 2014

Washington Mills Mullite: Purity is our Priority

Not every mullite is the same and purity levels can vary from one supplier to another. You may or may not know that the fused mullite Washington Mills produces is a higher purity mullite than what most other suppliers manufacture. Other mullites can contain cristobalite and a glass phase. They can also contain titania, iron, alumina, silica and free silica. Washington Mills fused mullite is 99% mullite and 1% alumina. This high level of purity makes our mullite virtually free of impurities. A high purity mullite performs better at higher temperatures since it is free from the impurities that can 1) lower the softening temperature and 2) leach out and diffuse into your products unnecessarily.

Are you interested in seeing how a higher purity mullite may improve your application? Please call us to today to learn more about our DURAMUL product and how our high purity fused mullite may reduce the level of impurities in your refractory. Contact Washington Mills at info@washingtonmills.com or 800-828-1666.

About Washington Mills Washington Mills started manufacturing abrasives in the U.S in 1868 and over 140 years later, we continue to manufacture high quality abrasives and refractory raw materials and serve thousands of customers around the world. Washington Mills controls the chemistry of our fused mullite from start to finish. We fuse and process fused mullite in North America which gives us 100% control over the manufacturing process. This process and quality control allows us to manufacture DURAMUL, a high quality fused mullite product, to meet your raw material refractory needs.